Abstract Due to characteristic of dual-inverter power supplying and existence of zero sequence loop, the open wingding permanent magnet synchronous machine (OW-PMSM) system with common DC bus has certain fault tolerance ability. And the influence of zero sequence current should be considered because of the zero sequence loop. However, when open phase fault occurs, the original mathematical model is no longer applicable. Thus, the torque ripple will become larger and the control performance will worse if the control strategy before fault occurrence is adopted. In this paper, according to the characteristics of OW-PMSM, the coordinate transformation was redesigned and a new mathematical model in dq-axis was obtained. The new torque equation has concise form which makes the torque control more convenient. At meantime, the dq-axis voltage equation is decoupled based on new coordinate transformation so that the calculation burden is reduced and control performance is improved. In order to further improve the current control performance, three vector based model predictive control (MPC) strategy was adopted. Then the voltage vector plane after open phase fault is reconstructed and the duty cycle can be calculated according to the new basic voltage vectors. The experimental results verify the effectiveness and superiority of the proposed method.
Chen Wenhan,Sun Dan,Wang Mingze. Research on Fault-Tolerance Strategy Based on Model Predictive Control for Open-Winding PMSM System under Open-Phase Fault[J]. Transactions of China Electrotechnical Society, 2021, 36(1): 77-86.
[1] Sun Yuanxiang, Li Zhen, Zhang Zhenbin.Hybrid predictive control with simple linear control based circulating current suppression for modular multilevel converters[J]. CES Transactions on Electrical Machines and Systems, 2019, 3(4): 335-341. [2] 刘珅, 高琳. 永磁同步电机的改进模型预测直接转矩控制[J]. 电机与控制学报, 2020, 24(1): 10-17.Liu Shen, Gao Lin. Improved model of predictive direct torque control for permanent magnet synchronous motor[J]. Electric Machines and Control, 2020, 24(1): 10-17. [3] 孟云平, 周新秀, 李红, 等. 基于四桥臂拓扑的永磁同步电机断相容错控制策略[J]. 电工技术学报, 2019, 34(15): 3158-3166.Meng Yunping, Zhou Xinxiu, Li Hong, et al. Fault tolerant strategy of four-leg for permanent magnet synchronous motor in case of open circuit fault[J]. Transactions of China Electrotechnical Society, 2019, 34(15): 3158-3166. [4] 吕康飞, 董新伟, 刘丽丽, 等.考虑零序电流抑制的开绕组永磁同步电机断相故障下统一调制策略[J].电工技术学报, 2020, 35(11): 2387-2395.Lü Kangfei, Dong Xinwei, Liu Lili, et al. The unified modulation scheme of open-end winding PMSM with common dc bus under the open-phase fault considering the suppression of zero-sequence current[J]. Transactions of China Electrotechnical Society, 2020, 35(11): 2387-2395. [5] 方敏, 周新秀, 刘刚. 三相永磁同步电机断相容错控制[J]. 电工技术学报, 2018, 33(13): 2972-2981.Fang Min Zhou Xinxiu, Liu Gang. Fault-tolerant control strategy for three-phase permanent magnet synchronous motor in case of one phase open-circuit[J]. Transactions of China Electrotechnical Society, 2018, 33(13): 2972-2981. [6] 彭忠, 郑泽东, 刘自程, 等. 基于虚拟绕组和全阶观测器的五相感应电机无速度传感器容错控制策略[J]. 电工技术学报, 2018, 33(21): 4949-4961.Peng Zhong, Zheng Zedong, Liu Zicheng, et al. A novel sensorless fault-tolerant control of five-phase induction machine using virtual winding and full-order observer[J]. Transactions of China Electrotechnical Society, 2018, 33(21): 4949-4961. [7] Xu Jinquan, Zhang Boyi, Fang Hao, et al.Guaranteeing the fault transient performance of aerospace multiphase permanent magnet motor system: an adaptive robust speed control approach[J]. China Electrotechnical Society Transactions on Electrical Machines and Systems, 2020, 4(2): 114-122. [8] Cheng Yifei, Sun Dan, Chen Wenhan, et al.Model predictive current control for an open-winding pmsm system with a common DC bus in 3-D space[J]. IEEE Transactions on Power Electronics, 2020, 35(9): 9599-9609. [9] 年珩, 阮晨辉, 何峪嵩, 等. 基于Z源逆变器的共直流母线开绕组永磁同步电机系统控制策略[J]. 中国电机工程学报, 2019, 39(18): 5509-5519, 5599. Nian Heng, Ruan Chenhui, He Yusong, et al.Control strategy for open-winding PMSM system with common DC bus based on Z-source inverters[J]. Proceedings of the CSEE, 2019,39(18): 5509-5519, 5599. [10] Zhan Hanlin, Zhu Z Q, Milijana Odavic.Analysis and suppression of zero sequence circulating current in open winding PMSM drives with common DC bus[J]. IEEE Transactions on Industry Applications, 2017, 53(4): 3609-3620. [11] Lin Xiaogang, Huang Wenxin, Jiang Wen, et al.Direct torque control for three-phase open-end winding PMSM with common DC bus based on duty ratio modulation[J]. IEEE Transactions on Power Electronics, 2020, 35(4): 4216-4232. [12] 秦艳忠, 阎彦, 陈炜, 等. 永磁同步电机参数误差补偿-三矢量模型预测电流控制[J]. 电工技术学报, 2020, 35(2): 255-265.Qin Yanzhong, Yan Yan, Chen Wei, et al. Three-vector-based model predictive current control for permanent magnet synchronous motor[J]. Transactions of China Electrotechnical Society, 2020, 35(2): 255-265. [13] Wang Wei,Zhang Jinghao,Cheng Ming.Common model predictive control for permanent-magnet synchronous machine drives considering single-phase open-circuit fault[J]. IEEE Transactions on Power Electronics, 2017, 32(7): 5862-5872. [14] Zhang Xiaoguang, Wang Keqin.Current prediction based zero sequence current suppression strategy for the semicontrolled open-winding PMSM generation system with a common DC bus[J]. IEEE Transactions on Industrial Electronics, 2018, 65(8): 6066-6076. [15] Liu Tianhua, Fu Jen Ren, Lipo T A.A strategy for improving reliability of field-oriented controlled induction motor drives[J]. IEEE Transactions on Industry Applications, 1993, 29(5): 910-918. [16] Hu Wei, Ruan Chenhui, Nian Heng, et al.Simplified modulation scheme for open-end winding PMSM system with common DC bus under open-phase fault based on circulating current suppression[J]. IEEE Transactions on Power Electronics, 2020, 35(1): 10-14. [17] Zhou Xinxiu, Sun Jun, Li Haitao, et al.High performance three-phase PMSM open-phase fault-tolerant method based on reference frame transformation[J]. IEEE Transactions on Industrial Electronics, 2019, 66(10): 7571-7580. [18] Gaeta A, Scelba G, Consoli A.Modeling and control of three-phase pmsms under open-phase fault[J]. IEEE Transactions on Industry Applications, 2013, 49(1): 74-83. [19] Kiselev A, Catuogno G R, Kuznietsov A, et al.Finite-control-set MPC for open-phase fault-tolerant control of PM synchronous motor drives[J]. IEEE Transactions on Industrial Electronics, 2020, 67(6): 4444-4452. [20] Hu Wei, Nian Heng, Sun Dan.Zero-sequence current suppression strategy with reduced switching frequency for open-end winding PMSM drives with common DC bus[J]. IEEE Transactions on Industrial Electronics, 2019, 66(10): 7613-7623.
2021, Vol. 36 
